$(function () {
    var mySwiper = new Swiper('.carousel_head', {
        autoplay: true,
        loop: true,
        slideClass: 'carousel_head_slide',
        pagination: {
            clickable :true,
            el: '.carousel_head_pagination',
            bulletElement : 'li',
            bulletActiveClass: 'head_slide_acitive'
        },
    })
})